The beauty of Twitter is that it can link you up with some really interesting and wonderful people. With care this will enlighten you in all sorts of ways. I discovered a man named Paul Raats, a professional photographer and ex-cyclist who produces some truly amazing images. I urge you to take a look at his website and take in the wonderful images on there.
Mainly cycling photographs, predominately of Lance Armstrong but all showing what tremendous athletes cyclists are. Follow him on Twitter and see all the recent images
He also produces some stunning running images. Check him out.